Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

5802 results

Standby mode

energy

A mode that a power plant employs to cope with excess power demands. Generators will be ready to start and connect to the grid within minutes to keep supply in line with demand, when the demand decreases the generators will ramp down and return to standby mode.

Standard wire gauge

energy

British Standard Wire Gauge is a unit for denoting wire size given by BS 3737:1964 (now withdrawn).

Standard cubic foot

energy

A standard cubic foot (scf) is a unit used both in the natural gas industry to represent an amount of natural gas and in other industries where other gases are used.

Standard conditions for temperature and pressure

energy

Standard temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.

Standard atmospheric pressure

energy

The standard atmosphere (atm) is a unit of pressure defined as 101325 Pa (1.01325 bar).

Standard atmosphere (unit)

energy

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar).

Stand-alone power system

energy

A stand-alone power system also known as remote area power supply, is an off-the-grid electricity system for locations that are not fitted with an electricity distribution system.

Rectifier

energy

A rectifier is an electrical device that converts alternating current, which periodically reverses direction, to direct current, which flows in only one direction.

Rectification

energy

Power conversion from AC to DC.

Recommended exposure limit

energy

A recommended exposure limit is an occupational exposure limit that has been recommended by the United States National Institute for Occupational Safety and Health.

Recloser

energy

In electric power distribution, automatic circuit reclosers are a class of switchgear which is designed for use on overhead electricity distribution networks to detect and interrupt momentary faults.

Reciprocating positive-displacement pumps

energy

Reciprocating pumps move the fluid using one or more oscillating pistons, plungers, or membranes (diaphragms), while valves restrict fluid motion to the desired direction.

Reciprocating engine

energy

A engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion.

Rechargeable battery

energy

A rechargeable battery, storage battery, or secondary cell, is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use

Reagent

energy

A reagent is a substance or compound added to a system to cause a chemical reaction, or added to test if a reaction occurs.

Reactor-grade plutonium

energy

Reactor-grade plutonium is the isotopic grade of plutonium that is found in spent nuclear fuel after the uranium-235 primary fuel that a nuclear power reactor uses has burnt up.

Reactor vessel head

energy

This structure is attached to the top of the reactor vessel body.

Reactor vessel body

energy

The reactor vessel body is the largest component and is designed to contain the fuel assembly, coolant, and fittings to support coolant flow and support structures.

Reactor vessel

energy

The reactor vessel is the first layer of shielding around the nuclear fuel and usually is designed to trap most of the radiation released during a nuclear reaction.

Reactor pressure vessel

energy

A reactor pressure vessel in a nuclear power plant is the pressure vessel containing the nuclear reactor coolant, core shroud, and the reactor core.

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